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Finding the Fourth Proportional to 533.20, 800.70 and 351.40

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Solution

The fourth proportional to 533.20, 800.70 and 351.40 is: 527.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.20 : 800.70 = 351.40 : x
  2. Step 2: Convert to fraction form
    533.20/800.70 = 351.40/x
  3. Step 3: Cross multiply
    533.20x = 800.70 × 351.40
  4. Step 4: Simplify right side
    533.20x = 281,365.98
  5. Step 5: Solve for x
    x = 281,365.98/533.20
  6. Step 6: Final answer
    x = 527.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.